. >> detective john karnishen, 38 years on the job. much of it as murder police on the east side.onted with violent hooliganism, the traditional approach has always been to get out there bust some heads, make some stats, put up some numbers, lock up some perpetrators. but after decades of dealing with generation after generation of violence, much of it gang related, he took an unusual and controversial new tactic. along with a colleague, he established a new unit called the violence reduction unit and focused their efforts on the social problems he felt led directly to violent crime. his peers unsurprisingly were dubious, but as of 2014 scotland is at a 40-year low of violent crime. retired from the force, he nowed a advises law enforcement around the world. when in town, though, he likes to come here -- typical scottish fare, mother india -- for a lamb curry simmered in spicy tomato gravy served with traditional scottish naan bread. >> i know glasgow is a traditionally tough town. i've always seen it as a warm and welcoming place. it's always been one of my favorite places in thi